Lu Liu, Dongdong Xi, Zhijian Chen, Lei Cheng, Yuwei Wang. Three-Dimensional Shape Measurement Based on Hybrid Dual-Frequency Fringe Projection[J]. Laser & Optoelectronics Progress, 2021, 58(12): 1212001
- Laser & Optoelectronics Progress
- Vol. 58, Issue 12, 1212001 (2021)
Fig. 1. Phase unwrapping using geometric constraint
Fig. 2. Flow chart of hybrid dual-frequency algorithm
Fig. 3. Simulated results. (a) High-frequency fringe; (b) low-frequency fringe; (c) high-frequency truncated phase; (d) low-frequency truncated phase; (e) unwrapped low-frequency phase; (f) unwrapped high-frequency phase
Fig. 4. 3D reconstructed shapes of step-block and error. (a)(d) Traditional double-frequency method; (b)(e) proposed method; (c)(f) Hynn method
Fig. 5. Experiment of sphere. (a) Image of sphere; (b) high-frequency fringe; (c) low-frequency fringe; (d) high-frequency phase; (e) low-frequency phase; (f) unwrapped low-frequency phase; (g) unwrapped high-frequency phase; (h) reconstructed sphere
Fig. 6. Error distributions. (a) Traditional dual-frequency method; (b) proposed method; (c) Hyun method
Fig. 7. Experimental results of steep plaster. (a) Average intensity; (b) high-frequency fringe; (c) low-frequency fringe
Fig. 8. Reconstructed 3D shapes of steep plaster. (a) Traditional dual-frequency method;(b) proposed method; (c) Hyun method
Fig. 9. Experimental results of Agriba plaster. (a) Image of plaster; (b) high-frequency fringe; (c) low-frequency fringe; (d) reconstructed 3D shape of proposed method
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